If you go on my profile on meta all tags have a core of 0. Whereas if you click on some one then tags that score is over 10!
Why is this?
The tags score only counts non-wiki answers.
In your case, you asked 9 questions (not counted for tags score) and posted 2 answers (counted for tags score). As of current writing, your tags score correctly show
discussion as -1 from the total of both of your answers.